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प्रश्न
How many electrons do inert gases have in their valence shells?
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उत्तर
All the noble or inert gases have 8 electrons in their valence shell except helium which has two electrons in its valence shell.
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संबंधित प्रश्न
What are the following group known as?
Group 18
Name two elements of each group.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas having electronic configuration: 2, 8, 8.
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Give reason:
Alkali metals are kept in an inert solvent.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Write a short note on the following type of element –
halogens
State the main helpful features of the long form of the periodic table.
Give a reason for the following:
Noble gases do not form compounds readily.
Give a reason for the following:
Group 1 [I – A] elements are called alkali metals.
